I am not sure if I know of any locations in the Denver area that have the depth and vis needed but it seems like there is some guys in grand junction that might be able to make it work there and that would be ok for myself and a friend if the days were right. I work as a firefighter so my shifts change all the time but if you could shoot me a few times that would be convenient for you we could try to make something work. Feel free to email me at dwightkillpack@gmail.com